Hi Sherrylmani,
There are too many possibilities to pinpoint exactly what's going on in your situation. Possibilities could be you're consuming too many calories to support weight loss, too few calories, workout intensity isn't high enough, workout doesn't include right activities, low metabolism, not consuming a balanced diet, and the list goes on. If you'd like input specific to your situation, I'd be happy to assess your diet. Check out the Mini Diet Makeover at http://lisanelsonrd.com/minidietmakeover.html.
All the best,
Lisa Nelson RD
The Best Way to Lose Weight